Alpine X110-SRA 10-Inch In-Dash Restyle System for 2014-Up GMC Sierra Trucks 10" touch screen is the largest aftermarket system available for 2014-up Sierra (trucks with the factory Bose system also need the KCX-BOSE-GM) Fitted bezel with large back-lit Red buttons provides a factory look and offers quick access to Main Features like audio sources and navigation System expansion available via external accessory controller (sold separately) that turns the X110-SRA into a control Hub for other truck accessories Visit the store Locator on the Alpine USA website for professional Installation